[Solar energy] Solar energy, no electricity required, only the sun, an energy-saving and environmentally friendly product. [Working mode] The oxygen pump works for 10 seconds and stops for 10 seconds. It is recommended to install it in a small family pond and a small area of the pond to increase the oxygen content. [Easy to use] Connect the pipe and the air stone, put it in the water, the aerator pump will float in the water and work. [Low noise] Stable and quiet oxygen pump, the volume is less than 60 decibels and the air flow is 0.8 liters / minute. < p>[With battery] Built-in 3.7V 2200mAh lithium battery for energy storage, so the oxygen pump can also work at night.< /p> Product description The oxygen pump runs for 10 seconds and stops for 10 seconds. It is recommended to install it in a small family pond and a small area of the pond to increase the oxygen content. [Easy to use] Connect the hose and put the air stone in the water. The aerator pump floats in the water and works.